Thanks guys,
I got one of praiano63's tunes for the gt '05 and the handling tightened up like a dream but then I remapped my controller so I could use the l2 and r2 buttons for the gas and break and turned all the aids of except the abs 1 like everybody does and I'm relearning how to drive.
I'll take a look at shifting the weight. Never even looked in there cause most of the time it's usually 50/50 anyway.
Here goes!